From the Himalayan Peaks to the depths of the ocean, the SAM Splint has proven itself to be the one splint with universal capabilities. Just 4.5" x 36" and weighing only 4 oz, the SAM Splint is foam padded for comfort and adaptable for use. The SAM Splint is invisible on x-rays, waterproof and reusable. It is not affected by extremes of temperature or altitude.